People told me they will invite me when i have played more
I think they might meant even more. As you maybe can see, many players have more than 1000 games.
And about that invite thing, i don't think you get invited to very many clans out of nowhere.
Here you see the list of all clans -> http://warlight.net/Clans/List
. Go and find a few clans you like, and contact their leader(s). If they have any requirements, it probably say so on their page. If you reach the requirements (if there are any), maybe you'll get a positive response.
Edited 7/18/2014 00:40:13